Abstract: Conducted by theory of similarity, apply the idea of similarity system to analyze similarity, similarity units and similarity degree at multi-levels between different NC systems. According to partitioning principles of similarity units, define the similarity units in all-levels and quantify their eigenvalues and attribute values. Set up the mathematical model to compute the similarity degree of NC instructions. Define the deterministic similitude and fuzzy similitude of NC instructions. Study out the descriptive procedure of program format and the encoded mode of NC code. Accordingly, bring forward a kind of NC code translation system model and emphatically discuss the idea of code translation algorithm.

Key words: NC code, similarity, code translation

摘要： 以相似理论为指导，基于相似系统的观点对不同数控系统指令之间的相似性、相似元、相似度等进行多层次的分析和研究。根据相似元的划分原则，定义各级相似元，量化其特征值和属性值。建立计算数控指令相似度的数学模型，并对数控指令的确定性相似和模糊性相似给出确切定义。拟定数控程序格式的描述方法和数控代码的编码方式，构建了一种通用的数控代码转换系统模型。

关键词: 数控代码, 相似性, 代码转换

CLC Number: 

• TP391